/**
 * @author alteredq / http://alteredqualia.com/
 *
 * Full-screen textured quad shader
 */

const CopyShader = {
  uniforms: {
    tDiffuse: {value: null},
    opacity: {value: 1.0}
  },

  vertexShader:
`
    varying vec2 vUv;

    void main() {

      vUv = uv;
      gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );

    }
`,

  fragmentShader:
`
    uniform float opacity;

    uniform sampler2D tDiffuse;

    varying vec2 vUv;

    void main() {

      vec4 texel = texture2D( tDiffuse, vUv );
      gl_FragColor = opacity * texel;

    }
`
};

export {
  CopyShader
};
